Turbulent burning rates of methane and methane–hydrogen mixtures
Turbulent burning rates of methane and methane–hydrogen mixtures
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DOI：
10.1016/j.combustflame.2009.02.001
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发表时间：
2009-04
影响因子：
4.4
通讯作者：
M. Fairweather;M. Ormsby;C. Sheppard;R. Woolley
中科院分区：
文献类型：
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作者：
M. Fairweather;M. Ormsby;C. Sheppard;R. Woolley
甲烷和甲烷-氢气（体积比为 10%、20% 和 50% 的氢气）混合物在风扇搅拌炸弹中在湍流中被点燃，并使用高速电影纹影成像进行拍摄。测量在 0.1 MPa（绝对）和 360 K 下进行。确定了一系列湍流速度和当量比的湍流燃烧速度。还得出了实验层流燃烧速度和马克斯坦数。对于所有燃料，湍流燃烧速度随着湍流速度的增加而增加。添加氢气通常会导致湍流和层流燃烧速度增加并降低马克斯坦数。与拉伸敏感（高马克斯坦数）火焰相比，那些对拉伸不太敏感（较低马克斯坦数）的火焰在湍流条件下燃烧得更快，特别是当湍流水平增加时。
Methane and methane–hydrogen (10%, 20% and 50% hydrogen by volume) mixtures have been ignited in a fan stirred bomb in turbulence and filmed using high speed cine schlieren imaging. Measurements were performed at 0.1 MPa (absolute) and 360 K. A turbulent burning velocity was determined for a range of turbulence velocities and equivalence ratios. Experimental laminar burning velocities and Markstein numbers were also derived. For all fuels the turbulent burning velocity increased with turbulence velocity. The addition of hydrogen generally resulted in increased turbulent and laminar burning velocity and decreased Markstein number. Those flames that were less sensitive to stretch (lower Markstein number) burned faster under turbulent conditions, especially as the turbulence levels were increased, compared to stretch-sensitive (high Markstein number) flames.